CN111322794A - Heat exchanger and air conditioning system - Google Patents

Heat exchanger and air conditioning system Download PDF

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Publication number
CN111322794A
CN111322794A CN201811538891.0A CN201811538891A CN111322794A CN 111322794 A CN111322794 A CN 111322794A CN 201811538891 A CN201811538891 A CN 201811538891A CN 111322794 A CN111322794 A CN 111322794A
Authority
CN
China
Prior art keywords
heat exchange
exchange tube
tubes
heat
heat exchanger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811538891.0A
Other languages
Chinese (zh)
Inventor
金俊峰
佩尔蒂埃·彼埃尔·奥利弗
李艳星
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Danfoss AS
Original Assignee
Danfoss AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Danfoss AS filed Critical Danfoss AS
Priority to CN201811538891.0A priority Critical patent/CN111322794A/en
Priority to JP2019112512A priority patent/JP7372761B2/en
Priority to US16/710,084 priority patent/US20200191490A1/en
Publication of CN111322794A publication Critical patent/CN111322794A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0471—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits having a non-circular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/006—Tubular elements; Assemblies of tubular elements with variable shape, e.g. with modified tube ends, with different geometrical features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0278—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of stacked distribution plates or perforated plates arranged over end plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/06—Several compression cycles arranged in parallel
    • F25B2400/061—Several compression cycles arranged in parallel the capacity of the first system being different from the second
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0084—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0085—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0214—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions

Abstract

The embodiment of the invention discloses a heat exchanger and an air conditioning system. The heat exchange tubes include a first heat exchange tube for forming a first loop and a second heat exchange tube for forming a second loop. According to the heat exchanger provided by the embodiment of the invention, if one loop of the air conditioning system with two loops is closed, the heat exchange efficiency of the heat exchanger can be improved.

Description

Heat exchanger and air conditioning system
Technical Field
Embodiments of the present invention relate to a heat exchanger and an air conditioning system.
Background
The heat exchangers of the two circuits of a conventional air conditioning system are separate.
Disclosure of Invention
It is an object of embodiments of the present invention to provide a heat exchanger and an air conditioning system whereby, for example, if one circuit of the two-circuit air conditioning system is closed, at least a portion of the fins for that circuit can be used for the other circuit, thereby improving the heat exchange efficiency of the heat exchanger.
An embodiment of the present invention provides a heat exchanger, including: and the heat exchange tubes comprise a first heat exchange tube for forming a first loop and a second heat exchange tube for forming a second loop.
According to an embodiment of the invention, the total heat exchange capacity of the first heat exchange tube is greater than the total heat exchange capacity of the second heat exchange tube.
According to an embodiment of the present invention, the heat exchanger further comprises: first fins, at least a portion of which extend in a first direction and which are arranged in a row and alternately arranged with the heat exchange tubes in a second direction perpendicular to the first direction.
According to an embodiment of the present invention, in the second direction, the first heat exchange tube group and the second heat exchange tube group are alternately arranged, the first heat exchange tube group being constituted by at least one of the first heat exchange tubes, and the second heat exchange tube group being constituted by at least one of the second heat exchange tubes.
According to an embodiment of the present invention, the first heat exchange tube, the second heat exchange tube, and the first fin are aligned in the second direction on at least one side in a third direction perpendicular to the first direction and the second direction.
According to an embodiment of the present invention, the number of the first heat exchange tubes is greater than the number of the second heat exchange tubes, the length of the first heat exchange tubes is greater than the length of the second heat exchange tubes, the width of the first heat exchange tubes is greater than the width of the second heat exchange tubes, the thickness of the first heat exchange tubes is greater than the thickness of the second heat exchange tubes, and/or the total area of the inner channels of the first heat exchange tubes is greater than the total area of the inner channels of the second heat exchange tubes.
According to an embodiment of the present invention, the heat exchange tubes are arranged in the second direction such that a plurality of identical repeating units are arranged in the second direction, and a predetermined number of the heat exchange tubes constitute one repeating unit, and in each repeating unit, the first heat exchange tubes and the second heat exchange tubes are alternately arranged in the second direction.
According to an embodiment of the present invention, 3 first heat exchange tubes and 2 second heat exchange tubes constitute one repeating unit, and the 2 second heat exchange tubes are respectively between adjacent 2 of the 3 first heat exchange tubes; 2 first heat exchange tubes and 1 second heat exchange tube constitute a repeating unit, and 1 second heat exchange tube is between 2 first heat exchange tubes; or 4 first heat exchange tubes and 3 second heat exchange tubes constitute one repeating unit, and the 3 second heat exchange tubes are respectively between adjacent 2 of the 4 first heat exchange tubes.
According to an embodiment of the present invention, the first heat exchange tube includes a first heat exchange tube portion and a second heat exchange tube portion arranged in a third direction perpendicular to the first direction and the second direction, and a connecting portion connecting the first heat exchange tube portion and the second heat exchange tube portion to each other and placing the first heat exchange tube portion and the second heat exchange tube portion in fluid communication with each other, the first heat exchange tube portion and the second heat exchange tube portion being in contact with the same first fin on one side in the second direction of the first heat exchange tube portion and the second heat exchange tube portion and being in contact with the same first fin on the other side in the second direction of the first heat exchange tube portion and the second heat exchange tube portion.
According to an embodiment of the present invention, the heat exchanger further comprises: first fins, at least a portion of which extend in a first direction and which are arranged in a row in a second direction perpendicular to the first direction; and second fins, at least a part of which extend in a first direction and which are arranged in a row in a second direction perpendicular to the first direction, wherein the first heat exchange tube comprises a first heat exchange tube portion and a second heat exchange tube portion which are arranged in a third direction perpendicular to the first direction and the second direction, and a connecting portion which connects the first heat exchange tube portion and the second heat exchange tube portion to each other and which fluidly connects the first heat exchange tube portion and the second heat exchange tube portion to each other, and a first group of the first fins and the first heat exchange tube portions and the second heat exchange tubes are alternately arranged in a row in the second direction perpendicular to the first direction; and a second group of heat exchange tubes formed by the second fins and the second heat exchange tube parts are alternately arranged in a row in a second direction perpendicular to the first direction.
According to an embodiment of the present invention, the first heat exchange tube portion, the second heat exchange tube portion and the connection portion of the first heat exchange tube are formed by bending one heat exchange tube.
According to an embodiment of the present invention, the heat exchanger further includes: the first collecting pipes are respectively arranged at two ends of the first heat exchange pipe; and the second collecting pipes are respectively arranged at two ends of the second heat exchange pipe.
According to the embodiment of the present invention, in the third direction perpendicular to the first direction and the second direction, the size of the first fin is the same as the size of the larger one of the portion of the first heat exchange tube in contact with the first fin and the portion of the second heat exchange tube in contact with the first fin.
According to an embodiment of the present invention, the heat exchanger further includes: the heat exchanger comprises first fins, wherein at least one part of each first fin extends along a first direction and is arranged in a row and alternately arranged with heat exchange tubes in a second direction perpendicular to the first direction, and the heat exchanger is bent into an L shape, a U shape or a C shape when viewed in the second direction.
An embodiment of the invention provides an air conditioning system, which comprises the heat exchanger.
According to the heat exchanger of the embodiment of the invention, for example, if one circuit of the air conditioning system of two circuits is closed, at least a part of the fins for the one circuit can be used for the other circuit, thereby improving the heat exchange efficiency of the heat exchanger.
Drawings
Fig. 1 is a schematic perspective view of a heat exchanger according to a first embodiment of the invention;
FIG. 2 is a schematic top plan view of a heat exchanger according to a first embodiment of the present invention, wherein the arrows along the heat exchange tubes indicate the flow direction of the refrigerant;
FIG. 3 is a schematic top plan view of a heat exchanger according to a second embodiment of the present invention, wherein the arrows along the heat exchange tubes indicate the flow direction of the refrigerant;
FIG. 4 is a schematic, partially enlarged view of a heat exchanger according to a third embodiment of the present invention;
FIG. 5 is a schematic, partially enlarged view of a heat exchanger according to a fourth embodiment of the present invention;
FIG. 6 is a schematic perspective view of a heat exchanger according to a fifth embodiment of the present invention;
FIG. 7 is a schematic top view of a heat exchanger according to a fifth embodiment of the invention;
FIG. 8 is a schematic perspective view of a heat exchanger according to a sixth embodiment of the present invention;
FIG. 9 is a schematic top view of a heat exchanger according to a sixth embodiment of the present invention;
FIG. 10 is a schematic perspective view of a heat exchanger according to a seventh embodiment of the present invention; and
fig. 11 is a schematic top view of a heat exchanger according to a seventh embodiment of the invention.
Detailed Description
An air conditioning system according to an embodiment of the present invention includes a heat exchanger. Specifically, the air conditioning system according to the embodiment of the present invention includes a compressor, a heat exchanger as an evaporator, a heat exchanger as a condenser, an expansion valve, and the like. The air conditioning system may include two or more cycles. Each cycle uses a circuit (circuit) to the heat exchanger, with the heat exchanger circuits being parallel and independent of each other.
Referring to fig. 1 to 11, a heat exchanger 100 according to an embodiment of the present invention includes: a heat exchange tube 1. The heat exchange tube 1 includes a first heat exchange tube 1A for forming a first circuit and a second heat exchange tube 1B for forming a second circuit.
According to an embodiment of the invention, the first loop and the second loop may be two loops in parallel and independent of each other. The heat exchange capacity of the first loop is greater than the heat exchange capacity of the second loop. For example, the total heat exchange capacity of the first heat exchange pipe 1A is larger than that of the second heat exchange pipe 1B. Referring to fig. 1 to 4, and 6 to 11, the heat exchanger 100 according to the embodiment of the present invention further includes: first fins 2, at least a portion of the first fins 2 extending in a first direction D1 and the first fins 2 being arranged in a row and alternating with the heat exchange tubes 1 in a second direction D2 perpendicular to the first direction D1. Thus, for example, if one circuit of a two-circuit air conditioning system is closed, at least a portion of the fins for that circuit can be used for the other circuit, thereby increasing the heat exchange efficiency of the heat exchanger. In some examples of the present invention, the first heat exchange pipe 1A includes a plurality of first heat exchange pipe groups, the second heat exchange pipe 1B includes a plurality of second heat exchange pipe groups, and the first heat exchange pipe groups and the second heat exchange pipe groups are alternately arranged along the second direction D2. The number of the first heat exchange pipes 1A of the plurality of first heat exchange pipe groups may be the same or different. The number of the second heat exchanging pipes 1B of the plurality of second heat exchanging pipe sets may be the same or different.
Referring to fig. 1 to 11, in some embodiments of the present invention, the first heat exchange tube 1A has a heat exchange capacity with fins greater than that of the second heat exchange tube 1B. For this embodiment, the heat exchange capacity of the first heat exchange tube 1A and the first fin 2 is greater than the heat exchange capacity of the second heat exchange tube 1B and the first fin 2. The different heat exchange capacities of the first heat exchange tube 1A and the second heat exchange tube 1B become advantageous, for example, when the refrigerant circuit and the associated compression system have different sizes and capacities, thereby allowing for different stages of capacity modulation and unloading.
Referring to fig. 1 to 4, in some embodiments of the present invention, the first heat exchange tubes 1A and the second heat exchange tubes 1B are alternately arranged in the second direction D2. In other embodiments of the present invention, in the second direction D2, the first heat exchange tube group and the second heat exchange tube group are alternately arranged, the first heat exchange tube group is composed of at least one (1, 2, 3 or more) of the first heat exchange tubes 1A, and the second heat exchange tube group is composed of at least one (1, 2, 3 or more) of the second heat exchange tubes 1B. That is, the plurality of first heat exchange tube groups and the plurality of second heat exchange tube groups are alternately arranged. The heat exchange tube 1 may be a flat tube. The quantity of the first heat exchange tubes 1A is greater than that of the second heat exchange tubes 1B, the length of the first heat exchange tubes 1A is greater than that of the second heat exchange tubes 1B, the width of the first heat exchange tubes 1A is greater than that of the second heat exchange tubes 1B, the thickness of the first heat exchange tubes 1A is greater than that of the second heat exchange tubes 1B, and/or the total area of the internal channels of the first heat exchange tubes 1A is greater than that of the internal channels of the second heat exchange tubes 1B. According to an example of the present invention, at least one side of the first heat exchange tube 1A, the second heat exchange tube 1B and the first fin 2 in a third direction D3 perpendicular to the first direction D1 and the second direction D2 is aligned in the second direction D2.
Referring to fig. 6 to 11, in some embodiments of the present invention, the heat exchange pipe 1 may be a flat pipe. The quantity of the first heat exchange tubes 1A is greater than that of the second heat exchange tubes 1B, the width of the first heat exchange tubes 1A is greater than that of the second heat exchange tubes 1B, the thickness of the first heat exchange tubes 1A is greater than that of the second heat exchange tubes 1B, and/or the total area of the inner channels of the first heat exchange tubes 1A is greater than that of the inner channels of the second heat exchange tubes 1B. According to an example of the present invention, at least one side of the first heat exchange tube 1A, the second heat exchange tube 1B and the first fin 2 in a third direction D3 perpendicular to the first direction D1 and the second direction D2 is aligned in the second direction D2.
Referring to fig. 1 to 4 and 6 to 11, in some embodiments of the present invention, in a third direction D3 perpendicular to the first direction D1 and the second direction D2, the size of the first fin 2 is the same as the size of the larger one of the portion of the first heat exchange tube 1A in contact with the first fin 2 and the portion of the second heat exchange tube 1B in contact with the first fin 2. Thereby, the first heat exchange tube 1A and the second heat exchange tube 1B are both allowed to contact the first fin 2 over the entire dimension (e.g., over the entire width) in the third direction D3.
Referring to fig. 5, in some embodiments of the present invention, the heat exchange tubes 1 are arranged in the second direction D2 such that a plurality of identical repeating units 20 are arranged in the second direction D2, a predetermined number of the heat exchange tubes 1 constitute one repeating unit 20, and the first heat exchange tubes 1A and the second heat exchange tubes 1B are alternately arranged in the second direction D2 in each repeating unit 20. For example, 3 first heat exchange tubes 1A and 2 second heat exchange tubes 1B constitute one repeating unit 20, and 2 second heat exchange tubes 1B are respectively between adjacent 2 of the 3 first heat exchange tubes 1A; 2 first heat exchange tubes 1A and 1 second heat exchange tube 1B constitute one repeating unit 20, and 1 second heat exchange tube 1B is between the 2 first heat exchange tubes 1A; or 4 first heat exchange tubes 1A and 3 second heat exchange tubes 1B constitute one repeating unit 20, and the 3 second heat exchange tubes 1B are respectively between adjacent 2 of the 4 first heat exchange tubes 1A. The first heat exchange tube 1A and the second heat exchange tube 1B are the same heat exchange tube, and alternatively, the first heat exchange tube 1A and the second heat exchange tube 1B may be different heat exchange tubes. In this way, for example, the ratio of the heat exchange capacity of the first heat exchange tube 1A to the first fin 2 to the heat exchange capacity of the second heat exchange tube 1B to the first fin 2 may be 2: 1, 3: 2, 4: 3, or the like. By adopting the mode, the heat exchange capacity of the first fin 2 can be utilized to the maximum extent, and various ratios of the heat exchange capacity of the first heat exchange tube 1A and the first fin 2 and the heat exchange capacity of the second heat exchange tube 1B and the first fin 2 are realized.
Referring to fig. 3, in some embodiments of the present invention, the first heat exchange tube 1A comprises a first heat exchange tube portion 1A1 and a second heat exchange tube portion 1A2 arranged in a third direction D3 perpendicular to the first direction D1 and the second direction D2, and a connecting portion 1A3 connecting the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 to each other and fluidly communicating the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 to each other, the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 being in contact with the same first fin 2 on one side of the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 in the second direction D2 and being in contact with the same first fin 2 on the other side of the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 in the second direction D2. For example, the first heat exchange tube portion 1A1, the second heat exchange tube portion 1A2 and the connecting portion 1A3 of the first heat exchange tube 1A may be formed by bending one heat exchange tube.
In the embodiment shown in fig. 3, the heat exchanger 100 further comprises: first fins 2, at least a part of the first fins 2 extending in a first direction D1 and the first fins 2 being arranged in a row in a second direction D2 perpendicular to the first direction D1; and second fins, at least a portion of which extend in a first direction D1 and which are arranged in a row in a second direction D2 perpendicular to the first direction D1. The first heat exchange tube 1A comprises a first heat exchange tube portion 1A1 and a second heat exchange tube portion 1A2 which are arranged in a third direction D3 perpendicular to a first direction D1 and a second direction D2, and a connecting portion 1A3 which connects the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 to each other and fluidly connects the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 to each other, the first fins 2 being alternately arranged in a row with a first group of heat exchange tubes composed of the first heat exchange tube portion 1A1 and the second heat exchange tube 1B in a second direction D2 perpendicular to the first direction D1; and a second group of heat exchange tubes composed of the second fins and the second heat exchange tube portion 1a2 are alternately arranged in a row in a second direction D2 perpendicular to the first direction D1. The height of the second fins in the second direction D2 is substantially equal to the distance between the adjacent second heat exchange tube portions 1a2 and is greater than the height of the first fins 2 in the second direction D2. That is, in this embodiment, the length of the first heat exchange pipe 1A is greater than the length of the second heat exchange pipe 1B, thereby achieving different heat exchange capacities of different circulation circuits. The heat exchanger not only realizes different heat exchange capacities of different circulation loops, but also makes full use of the installation space of the heat exchanger, and obtains the heat exchange capacity obviously superior to that of a single-row heat exchanger. The first heat exchange tube portion 1a1 and the second heat exchange tube portion 1a2 may be substantially parallel and may be substantially parallel to the second heat exchange tube 1B.
Referring to fig. 1-3, 6-11, in some embodiments of the present invention, the heat exchanger 100 further comprises: the first collecting pipes 3A are respectively arranged at two ends of the first heat exchange pipe 1A; and second collecting pipes 3B respectively arranged at two ends of the second heat exchange pipe 1B.
According to an embodiment of the present invention, referring to fig. 6 to 11, the heat exchanger 100 further includes: first fins 2, at least a portion of the first fins 2 extending in a first direction D1 and the first fins 2 being arranged in a row and alternating with the heat exchange tubes 1 in a second direction D2 perpendicular to the first direction D1. When viewed in the second direction D2 (when viewed in a top view), the heat exchanger 100 is bent into an L-shape (fig. 6 and 7), a U-shape (fig. 10 and 11), or a C-shape (fig. 8 and 9). In addition, the heat exchanger 100 may be bent into any other shape such as a V shape.
According to the embodiment of the present invention, since the first heat exchange pipe 1A and the second heat exchange pipe 1B share at least a portion of the plurality of first fins 2, if one circuit of the air conditioning system of two circuits is closed, at least a portion of the first fins for the one circuit can be used for the other circuit, thereby improving the heat exchange efficiency of the heat exchanger.
According to an embodiment of the present invention, referring to fig. 1, 2 and 4, the first heat exchange tubes 1A and the second heat exchange tubes 1B are alternately arranged in the second direction D2. The heat exchange tubes 1 are flat tubes, and the width of the first heat exchange tube 1A is greater than that of the second heat exchange tube 1B. According to an example of the present invention, at least one side of the first heat exchange tube 1A, the second heat exchange tube 1B and the first fin 2 in a third direction D3 perpendicular to the first direction D1 and the second direction D2 is aligned in the second direction D2. The flat pipe of small width is bent more easily, can use the pressure manifold of littleer diameter, has greatly practiced thrift the cost. Furthermore, existing flat tubes can be used without the need for new gauge flat tubes. For example, the ratio of the width of the first heat exchange tube 1A to the width of the second heat exchange tube 1B is 2: 1. Therefore, the ratio of the heat exchange capacity of the first heat exchange tube 1A and the first fin 2 to the heat exchange capacity of the second heat exchange tube 1B and the first fin 2 is 2: 1.
According to embodiments of the present invention, heat exchange capacity of a heat exchanger is improved at part load conditions, the heat exchanger can be maintained at a sufficient refrigerant flow rate for oil return at part load conditions, and the air conditioning system can continue to operate from one system in the event of a cycle failure.
According to the embodiment of the invention, the heat exchanger is more compact. In addition, while the first heat exchange tubes 1A and the second heat exchange tubes 1B are alternately arranged to the maximum, heat exchange capacities of different ratios of two cycles are realized.
Furthermore, the above-described embodiments according to the invention can be combined into new embodiments.

Claims (15)

1. A heat exchanger, comprising:
a heat exchange pipe is arranged on the upper surface of the heat exchange pipe,
wherein the heat exchange tubes include a first heat exchange tube for forming a first circuit and a second heat exchange tube for forming a second circuit.
2. The heat exchanger of claim 1, wherein:
the total heat exchange capacity of the first heat exchange pipe is larger than that of the second heat exchange pipe.
3. The heat exchanger of claim 2, further comprising:
first fins, at least a portion of which extend in a first direction and which are arranged in a row and alternately arranged with the heat exchange tubes in a second direction perpendicular to the first direction.
4. The heat exchanger of claim 3, wherein:
in the second direction, the first heat exchange tube group and the second heat exchange tube group are alternately arranged, the first heat exchange tube group is composed of at least one first heat exchange tube, and the second heat exchange tube group is composed of at least one second heat exchange tube.
5. The heat exchanger of claim 3, wherein:
at least one side of the first heat exchange tube, the second heat exchange tube, and the first fin in a third direction perpendicular to the first direction and the second direction is aligned in the second direction.
6. The heat exchanger of claim 4 or 5, wherein:
the number of the first heat exchange tubes is larger than that of the second heat exchange tubes,
the length of the first heat exchange tube is greater than that of the second heat exchange tube,
the width of the first heat exchange tube is larger than that of the second heat exchange tube,
the thickness of the first heat exchange tube is larger than that of the second heat exchange tube, and/or
The total area of the inner channels of the first heat exchange tube is greater than the total area of the inner channels of the second heat exchange tube.
7. The heat exchanger of claim 3, wherein:
the heat exchange tubes are arranged in the second direction such that a plurality of identical repeating units are arranged in the second direction, a predetermined number of the heat exchange tubes constitute one repeating unit, and the first heat exchange tubes and the second heat exchange tubes are alternately arranged in the second direction in each repeating unit.
8. The heat exchanger of claim 7, wherein:
the 3 first heat exchange tubes and the 2 second heat exchange tubes form a repeating unit, and the 2 second heat exchange tubes are respectively arranged between adjacent 2 of the 3 first heat exchange tubes;
2 first heat exchange tubes and 1 second heat exchange tube constitute a repeating unit, and 1 second heat exchange tube is between 2 first heat exchange tubes; or
The 4 first heat exchange tubes and the 3 second heat exchange tubes constitute one repeating unit, and the 3 second heat exchange tubes are respectively between adjacent 2 of the 4 first heat exchange tubes.
9. The heat exchanger of claim 3, wherein:
the first heat exchange tube includes a first heat exchange tube portion and a second heat exchange tube portion arranged in a third direction perpendicular to the first direction and the second direction, and a connecting portion connecting the first heat exchange tube portion and the second heat exchange tube portion to each other and fluidly communicating the first heat exchange tube portion and the second heat exchange tube portion with each other, the first heat exchange tube portion and the second heat exchange tube portion being in contact with a same first fin of one side of the first heat exchange tube portion and the second heat exchange tube portion in the second direction and being in contact with a same first fin of the other side of the first heat exchange tube portion and the second heat exchange tube portion in the second direction.
10. The heat exchanger of claim 2, further comprising:
first fins, at least a portion of which extend in a first direction and which are arranged in a row in a second direction perpendicular to the first direction; and
second fins, at least a portion of which extend in a first direction and which are arranged in a row in a second direction perpendicular to the first direction,
wherein the first heat exchange tube comprises a first heat exchange tube portion and a second heat exchange tube portion which are arranged in a third direction perpendicular to the first direction and the second direction, and a connecting portion which connects the first heat exchange tube portion and the second heat exchange tube portion to each other and which fluidly connects the first heat exchange tube portion and the second heat exchange tube portion to each other,
the first fins and a first group of heat exchange tubes formed by the first heat exchange tube parts and the second heat exchange tubes are alternately arranged into a row in a second direction perpendicular to the first direction; and
and a second group of heat exchange tubes formed by the second fins and the second heat exchange tube parts are alternately arranged in a row in a second direction perpendicular to the first direction.
11. The heat exchanger of claim 9 or 10, wherein:
the first heat exchange tube part, the second heat exchange tube part and the connecting part of the first heat exchange tube are formed by bending one heat exchange tube.
12. The heat exchanger of claim 2 or 3, further comprising:
the first collecting pipes are respectively arranged at two ends of the first heat exchange pipe; and
and the second collecting pipes are respectively arranged at two ends of the second heat exchange pipe.
13. The heat exchanger of claim 2 or 3, wherein:
in a third direction perpendicular to the first direction and the second direction, the size of the first fin is the same as the size of the larger one of the portion of the first heat exchange tube in contact with the first fin and the portion of the second heat exchange tube in contact with the first fin.
14. The heat exchanger according to claim 1 or 2, further comprising:
first fins, at least a portion of which extend in a first direction and which are arranged in a row and alternately arranged with the heat exchange tubes in a second direction perpendicular to the first direction,
when the heat exchanger is viewed in the second direction, the heat exchanger is bent into an L shape, a U shape or a C shape.
15. An air conditioning system comprising:
the heat exchanger of claim 1.
CN201811538891.0A 2018-12-14 2018-12-14 Heat exchanger and air conditioning system Pending CN111322794A (en)

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JP2019112512A JP7372761B2 (en) 2018-12-14 2019-06-18 Heat exchanger and air conditioning system
US16/710,084 US20200191490A1 (en) 2018-12-14 2019-12-11 Heat exchanger and air-conditioning system

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